Background discrimination capabilities of a heat and ionization germanium cryogenic detector
نویسندگان
چکیده
منابع مشابه
Large Cryogenic Germanium Detector: Final Report
Cryogenic Germanium detectors are widely used in high energy physics and astrophysics – for example in direct dark matter searches (such as the Cryogenic Dark Matter Search experiment), or in neutrino-less double-beta decay experiments (such as MAJORANA). Potential future applications include X-ray observations and measurements of coherent neutrino scattering. In all of these fields, increasing...
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The Ge(1/2) metastable states decay with a very characteristic signature which allow them to be tagged event-by-event. Studies were performed using data taken with a high-purity germanium detector in a low-background laboratory near a nuclear power reactor core where ν̄e-flux was 6.4× 10 12 cms. The measured average and equilibrium production rates of Ge(1/2) were (8.7± 0.4) and (6.7± 0.3) kgday...
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Sensitive n-type and p-type germanium thermistors were fabricated by the melt doping technique and by the neutron transmutation doping (NTD) technique, respectively, aiming at a use for the cryogenic thermal detector, or bolometer of Tokyo dark matter search programme. We report on the measurements of the sensitivities of these thermistors. In particular, the ptype thermistors are sensitive eno...
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Low background HPGe detectors have been used for many years in the measurement of low activities of radionuclides in various materials. With the increased importance of nuclear forensics, low background detectors are in increasing demand. The endcap and other materials used in low background detector construction must be selected to have the lowest activity possible. In some cases, the material...
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The heat quenching factor Q (the ratio of the heat signals produced by nuclear and electron recoils of equal energy) of the heat-and-ionization germanium bolometers used by the EDELWEISS collaboration has been measured. It is explained how this factor affects the energy scale and the effective quenching factor observed in calibrations with neutron sources. This effective quenching effect is fou...
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ژورنال
عنوان ژورنال: Astroparticle Physics
سال: 2001
ISSN: 0927-6505
DOI: 10.1016/s0927-6505(00)00127-4